GNOME developers fixed mutter 46.0 sync issue

Severe lag issues in GNOME 46 (affects NVIDIA users), makes the platform unusable since 41280. I use QTerminal at the moment and unset the XMODIFIERS environment variable.

The issue is resolved and merged.

Kind ping: CL 41540. The important patch of the two mentioned in the issue ticket was missed.

The keyboard lag issue is resolved in CL 41560. Many thanks.